Gas-cock and swinging joint



0., F. THIEME.

Gas Cock. No.'16,129. Patented Nov. 25. 1856.

'70 l v z UNITED STATES PATENT OFFICE.

' CHARLES E. THIEME, OF PHILADELPHIA, PENNSYLVANIA.

GAS-COCK AND SWINGING JOINT.

Specification of Letters Patent No. 16,129, dated November 2-5, 1856.

T 0 all whom it may concern:

Be it known that I, C. F. THIEME, of the city of Philadelphia, in theState of Penndeclare that the following is a full, clear, 1 and exactdescription of the construction and operation of the same, referencebeing had to the accompanying drawing, making a part of thisspecification, by which is represented an enlarged longitudinal sectionthrough the middle of the apparatus.

Gas-cocks and swing-joints have heretofore been constructed as separatedevices, with distinct barrels one for the swing plug, and the other forthe key or cockand each of these requiring to be accurately bored, andthe plug and key turned upon a lathe and then ground in their respectivebarrels, in order to make them work properly, and gas tight.Consequently their construction requires the best workmen, besidesadouble adjustment for each apparatus. Hence, to simplify and thusreduce the cost of construction without in the least diminishing theircapabilities, is a matter of importance both to the trade and thepublic; and this is the object of my invention.

It consists in so constructing the swing plug and its barrel, as todispense with the boring, turning and grinding, heretofore required andalso, in combining the swing-plug and key, together so as to serve thedouble purpose of a swing-joint and cock dispensing with the usualseparate and distinct key-barrel.

Referring to the drawing-A, is the barrel; B, the swing-plug, and C, thekey. The barrel (A) is cast hollow, and open at each endthe inner sidebeing left rough; the two ends only, being smoothed around their edges.The stem of the swing-plug (B) is made tubular throughout, but the plugproper, or that part which enters within the barrel is made considerablyless in its diameter than the inside of the barrel, and has around itsupper end, a grooved or rimmed shoulder (cl), which is cast on, so as toextend over and cover the upper end of the barrel when applied thereto;and has also a leather washer (e), seated in its groove so as to come incontact with and fit and move gas-tight upon the upper edge of the saidbarrel, when the plug is drawn down upon the latter, as will presentlybe described.

The lower end of the swing-plug (B) eX- tends down to, or projects ashort distance through, the lower end of the barrel, and has a screwthread on its inner side at this point, into which screws a centralprojection (g) which forms part of the ca or covering (13) of the lowerend of the and. This cap is also made with an annular groove. Thisgroove is fitted with a spiral spring (2') and over and in contact withthis, a leather washer (is), so that when the cap is screwed up, thesaid washer (is) bears, gastight though not rigidly, against the lowerend of the barrel (A), and at the same time draws the plug downwardly,causing also its leather washer (e) to make a like gas-tight joint atthe upper end of the barrel, as before stated, and without impairing therequisite swinging capacity of the plug; and the side of the plug beinbored through, so as to form the opening 79) for the passage of the gasfrom the barrel, it serves the purpose of a swing-joint, when as injointed brackets, a key or cock is not required at this part.

In fitting a key to the joint just described, the center of the cap (13)is bored, and the key (C) made so as to be moved up and down therein, byrotary motion, on screw threads-its upper end (1) being also reduced indiameter, threaded, and fitted with a small nut (m) so as to holdthereon a series of leather rings (02) whose respective diameters equalthe diameter of the bore (0) in the plugthus forming a piston therein.The length of range which is permitted to the key, is only suflicient tocause the leather piston packing to close and inclose the side opening(79) which is made in the plug.

Operation: The plug being inserted in the barrel, and the cap (13)screwed into cemented connect-ion with the lower end of the same-theedges of the leather rings (7%) having been previously greasedtheapparatus is ready for application and use, both as a swing-joint andcock. When so applied, and the key (C) screwed up to its shoulder, nogas can pass through the plug, nor out of the barrel-but when the saidkey is screwed down, the gas passes freely and only through the sideopening (79) in the plugas shown by the arrows in the figure. And ifrequired to be used only as a swingjoint, the key (0) may be dispensedwith, and the center hole of the cap (13) stopped with a plug, or leftunborecl.

The advantages of this invention consist,

as before stated, in its greater simplicity, and consequent diminishedcost of construction. The apparatus can be produced by ordinary workmen,or boys, and nearly thirty per cent cheaper than the old kind; Whilethey are equally perfect and serviceable; and none the less convenientin use.

hat I claim as my invention, and desire to secure by Letters Patent, is

1. Making a swing-joint for gas brackets, substantially as described;the same consisting of the tubular plug (B), and its cap (13) with theleather Washer and spring (i) or their equivalents; in combination Withthe barrel (A) constructed as set forth and described; so as to producea gas-tight swing-joint, Without the usual boring and grindingheretofore required as described.

2. I also claim the combination of the key With the lower end of theplug, when the same is used as a gas-00011; so as to dis: pense With adistinct barrel heretofore required for a cock; the said key beingconstructed, combined and operating substantially in the manner setforth and described.

CHARLES F. TI-IIEME.

Witnesses:

BEN. MomsoN, J N0. B. KENNY.

